Railway-car heater



(No Model.)

wfiwss 6,5

I I r J- P. lflcflii LRO'lf-v RAILWAY GAR HEATER.

Patented Apr. 29. 1890.

UNITED STATES PATENT OFFICE.

JAMES F. MOELROY, OF ALBANY, NEYV YORK, ASSIGNOR TO TIIE CONSOLI- DATEDCAR HEATING COMPANY, OF IVIIEELING, VEST VIRGINIA.

RAI LWAY-CAR H EATER.

SPECIFICATION forming part of Letters Patent No. 426,845, dated April29, 1890.

Application file d September 24:, 1889. Serial No. 324,913. (No model.)

To all whom it may concern.- circular flange of suitable depth to fit onthe Be it known that I, JAMES F. MCELROY, a interior of the shell to andprovided with citizen of the United States, residing at Alsuitablerivet-holes, whereby it may be rivbany, in the county of Albany andState of eted thereto, and with an aperture m at or New York, haveinvented certain new and near the center thereof. On the inside thisuseful Improvements in Railway-Car Heaters, flange is provided with ahollow abutment n, of which the following is a specification, refhavinga screw-threaded aperture 0 at one erence being had therein. to theaccompanyside. The aperture m is also screw-threaded. drawings- Thiscasting thus constructed forms an elbow to This invention relates to newand useful having a flange whereby it may be secured 6o improvements inrailway-car heating;and the upon the shell. The aperture m coincidesinvention consists in the peculiar construcwith a similar aperturethrough the shell a tion and arrangement of parts more fully at the top,in which is secured the steam-inhereinafter described and claimed. letpipe K, controlled by a suitable valve K 5 In the drawings whichaccoinpanythis speoiand connecting with any source of steam- 6'5fication, Figure 1 is a vertical central section supply. The apertureconnects witlrthe upthrough my improved heater. Fig. 2 is a secper endof the steam-coil. The lower end of tion thereof on line X X. Fig. 3 isa vertical the steam-coil connects into the aperture 0 central sectionthrough the top of the wateron the elbow J, and the aperture m connects.zo chamber and the cast flange. Fig. 4 is a perwith the pipe L, whichis carried to any conspective view of the cast flange. venient pointwherein the water of condensa- A is the base of the stove. tion from thesteam is desired to be discharged. B 1s the grate, secured in the ringC. M is the ingoing pipe from the hot-water- D is an annularwater-jacket, consisting of circulating apparatus, which is connectedinto 2 5 the outer shell a and the inner shell I). The the bottom of thewater-chamber through an 7 5 outer shell is provided with a shoulder cand apertured screw-threaded flange N.

a flange c, and the inner shell is provided at O is the outgoing pipe,which is connected the bottom with a shoulder (Z and a flange d. at thetop of the water-chamber through a The shoulders c and dare of suitablelength, similar flange bolted to the outer shell a.

0 so as to form a hearing at the bottom between The parts being thusconstructed and arthe flange d and the outer shell and at the ranged,they are intended to operate as fol top between the flange c and theinner shell. lows: The stove being set up in connection E isatop of anydesired construction, pref- .with the system of hot--water-circulatingerably that shown in the drawings, and it is pipes and theexpansion-drum, (not shown,)

3 5 provided with a central aperture 6 for a and a suitable quantitybeing filled therein, smoke-passage arranged in line with the walls incase a fire is built in the stove the heat of the combustion-chamber F.This top is impinging against the inner shell of the waprovided wit-h asuitable flange f, which rests ter-chamber will cause a circulation ofthe upon the extension q of the inner shell I), and water from thebottom to the top thereof, the

40 with suitable flanges h to receive the dome 1', water enteringthrough the pipe M thereof which surrounds the smoke-stack, as is usualand finding exit through the pipe 0. NVhen the in these constructions.The lower side of the fire is out and steam is admitted through the topis provided with a suit-able flange j, and valve K into the steam-coil,which is surthe ring 0 is provided at the top with suitrounded by thewater of circulation in the 45 able flanges k, to which is bolted thecasing G. water-chamber, the steam will enter at the 5 II is asteam-coil arranged in the watertop of the steam-coil and circulatethrough chamber and connecting at its top into a cast the same to thebottom of the water-chamber, elbow I and at its bottom into a cast elbowwhere it will find exit through the pipe L. J of similar construction.These elbows are By this construction it is evident that the 50 of thefollowing construction: Zis asegmental water, in order to find exitthrough the pipe 0, will need to pass the entire length of theWater-chamber, thereby coming into contact with all the steam-coilsbefore it can escape upward, and also that the hottest water is broughtinto contact with the hottest stcanr pipe at the top and the coldestwater into contact with the coldest steam, or the steam of the lowestpressure, whereby the steam is more rapidly condensed. By thisconstruction the greatest amountoii' benefitis obtained from the steam,the pipe L carrying ol't' merely the Water of condensation instead, asin other devices of this cl1aracter,'oit discharging a large amount ofsteam with the water of condensation.

My water-; 'aohet forms at once the lining for the combustion-ohamber,the water-j acket, and the support for the top, and also allows ofconnecting directlyinto the Water-chamber all the necessaryconnecting-pipes without danger of damage thereto.

\Vhat I claim as my invention is.

1. In a Water-heater, a untenjachet complete in itself and forming thecasing for the comlmstion-ehamber, a steam-coil in said water-ehamberand connected at top and bottom therewith by means of flanged elbows J,and flanged nipples at the top and bottom of the said Water-chamber forthe ingoing and out going water (:OHHOCIIOH, the parts being arranged tooperate substantially as and for the purpose described.

2. In a n atenheater, L \\'Lt6l'-jt0k0lj surrounding thecombustion-cliamber, a steamcoil in said water-j acket,connectiug at topand bottom with the flanged elbows J, the elbows I having segmentalcircular flanges I, and screw-threaded apertures 0 and 0, substantiallyas described.

In testimony whereof I ailix my signature, in presence 01: twowitnesses, this 31st day of August, 1889.

JAMES F. MCELROY. lVitnesses:

EDWIN A. SMITH, 'IJIOS. U. MURRAY.

